Examination of aerosol impacts on convective clouds and precipitation in two metropolitan areas in East Asia; how varying depths of convective clouds between the areas diversify those aerosol effects?

被引:0
作者
Lee, Seoung Soo [1 ,2 ]
Choi, Jinho [3 ]
Kim, Goun [4 ]
Ha, Kyung-Ja [2 ,5 ,6 ]
Seo, Kyong-Hwan [3 ]
Jung, Chang Hoon [7 ]
Um, Junshik [3 ]
Zheng, Youtong [8 ]
Guo, Jianping [9 ]
Song, Sang-Keun [10 ]
Lee, Yun Gon [11 ]
Utsumi, Nobuyuki [12 ]
机构
[1] Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, Baltimore, MD 21201 USA
[2] Pusan Natl Univ, Res Ctr Climate Sci, Busan, South Korea
[3] Pusan Natl Univ, Dept Atmospher Sci, Busan, South Korea
[4] Korea Inst Ocean Sci & Technol, Marine Disaster Res Ctr, Pusan, South Korea
[5] Inst Basic Sci, Ctr Climate Phys, Busan, South Korea
[6] Pusan Natl Univ, BK21 Sch Earth & Environm Syst, Busan, South Korea
[7] Kyungin Womens Univ, Dept Hlth Management, Incheon, South Korea
[8] Princeton Univ, Program Atmospher & Ocean Sci, Princeton, NJ 08544 USA
[9] Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing, Peoples R China
[10] Jeju Natl Univ, Dept Earth & Marine Sci, Jeju, South Korea
[11] Chungnam Natl Univ, Dept Astron Space Sci & Geol, Daejeon, South Korea
[12] Kyoto Univ Adv Sci, Nagomori Inst Actuators, Kyoto, Japan
基金
新加坡国家研究基金会;
关键词
AIR-POLLUTANTS; ICE NUCLEATION; URBAN AREAS; PART I; MODEL; STORMS; CHINA; MICROPHYSICS; SIMULATIONS; DYNAMICS;
D O I
10.5194/acp-22-9059-2022
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This study examines the role played by aerosols which act as cloud condensation nuclei (CCN) in the development of clouds and precipitation in two metropolitan areas in East Asia that have experienced substantial increases in aerosol concentrations over the last decades. These two areas are the Seoul and Beijing areas and the examination was done by performing simulations using the Advanced Research Weather Research and Forecasting model as a cloud system resolving model. The CCN are advected from the continent to the Seoul area and this increases aerosol concentrations in the Seoul area. These increased CCN concentrations induce the enhancement of condensation that in turn induces the enhancement of deposition and precipitation amount in a system of less deep convective clouds as compared to those in the Beijing area. In a system of deeper clouds in the Beijing area, increasing CCN concentrations also enhance condensation but reduce deposition. This leads to negligible CCN-induced changes in the precipitation amount. Also, in the system there is a competition for convective energy among clouds with different condensation and updrafts. This competition results in different responses to increasing CCN concentrations among different types of precipitation, which are light, medium and heavy precipitation in the Beijing area. The CCN-induced changes in freezing play a negligible role in CCN-precipitation interactions as compared to the role played by CCN-induced changes in condensation and deposition in both areas.
引用
收藏
页码:9059 / 9081
页数:23
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